Voici les articles les plus récents de notre base de données:
nouvelle recherche

		Page 684/886

	The lcm of 1 and -1		2004-11-03
		Nayiyan pose la question : I would like to know what is the LCM of (-1) and (+1) is. Penny Nom lui répond.
	Adding 3% to get 120,000		2004-11-02
		Shaun pose la question : I was asked a question by a friend of mine's kid. He asked me if you had a final figure of say 120,000, how do you work out the amount you started with if you added 3% of the starting amount, to the starting amount to get the 120,000. Paul Betts lui répond.
	Tennis balls and probability		2004-11-01
		Jeremy pose la question : I have a hopper of tennis balls that contains 25 new tennis balls and 10 old tennis balls. In the hopper the tennis balls are mixed up randomly. If i take one ball out of the hopper and hit it and then put it back and then take another ball out of the hopper and hit it and put it back, what is the probability that i hit two new tennis balls? Also a tennis ball becomes old after being hit just once. Penny Nom lui répond.
	The sides of a hexagon		2004-11-01
		Timothy pose la question : I have a perfect Hexagon in which i know the measurement across is 10m. Not from point to point, but from the middle of one side directly across to the middle of the other. From that measurement, how can I determine the length of 1 side. Penny Nom lui répond.
	Nombre premier		2004-11-01
		Katia pose la question : Pouvez-vous me dire comment savoir si un nombre est premier? Claude Tardif lui répond.
	Multiplying two algebraic fractions		2004-10-31
		A parent pose la question : Multiply: x+2 x²-4 ----- x ------- x-2 x²+x-2 Harley Weston lui répond.
	Imaginary roots of a ploynomial		2004-10-31
		Jennifer pose la question : how to find the roots of a polynomial equation if it would be imaginary? Harley Weston lui répond.
	GCD and LCM		2004-10-31
		Cartalina pose la question : how do you calculate the "positive difference between the GCF and LCM of two numbers"? Penny Nom lui répond.
	The combined force of two vectors		2004-10-30
		Brian pose la question : Two teams are playing push ball with a large 8 foot diameter ball. One team exerts a force represented by the vector a = 2i + -5j, and the other team exerts a force represented by the vector b = -8i-3j. 1.Determine the direction of movement of the ball if the i axis is due east. 2.Determine the combined force magnitude. Harley Weston lui répond.
	Solving triangles		2004-10-30
		Allen pose la question : Solve the following triangles. Given 1. B = 20 Degrees, a = 25, b = 16 2. A = 35 Degrees, b = 2, c = 3 3. A = 32 Degrees, C = 44, c = 20 Harley Weston lui répond.
	Vectors in three space		2004-10-30
		Jo pose la question : I have two questions that I just cannot visulise and dont know how to get started on them..! 1. Ship X is sailing North at 4m/s and Ship Y is sailing due East at 3m/s. A sailor on Ship X climbs a vertical pole at 1/2 m/s. What is the velocity of the sailor on Ship X relative to an observer on Ship Y? State it's magnitude and direction. Not sure where to start with this one... 2. Show, using vectors, that for any tetrahedron, the segments joining the midpoints of the opposite edges are concurrent. i know what a tetradedron is, and what I am proving but do I solve simultaneously for a specific case?? Walter Whiteley lui répond.
	Bedmas		2004-10-30
		Gina pose la question : I am just curious whether Bedmas would be used in the following question as it is not in the typical Bedmas format. Multiply 12 x 24 Add 26 Divide by 2 Subtract 7 Would we go about doing it in the sequence it is given or in Bedmas ? Penny Nom lui répond.
	The force of a 5000 tonne lorry		2004-10-27
		Aaron pose la question : A 50 tonne lorry is parked on a slope with a gradient of 4%. Due to the self weight of the lorry, what is the force * acting down the slope * acting normal (at right angles) to the slope Penny Nom lui répond.
	Ratios and rates		2004-10-27
		Kenneth pose la question : What is the difference between a ratio and a rate? Penny Nom lui répond.
	Cube roots		2004-10-26
		A parent pose la question : How do you solve the problem of finding the cubed root of (17 to the power of 3). Can you show me each step and if you have a visual representation of this it would be very helpful. Also can you show a step by step of finding the cubed root of 27. Visuals help a lot Penny Nom lui répond.

		Page 684/886